var cssdropdown={
    disappeardelay: 250, //set delay in miliseconds before menu disappears onmouseout
    dropdownindicator: '<img src="images/down.gif" border="0" />', //specify full HTML to add to end of each menu item with a drop down menu
    enablereveal: [true, 8], //enable swipe effect? [true/false, steps (Number of animation steps. Integer between 1-20. Smaller=faster)]
    enableiframeshim: 1, //enable "iframe shim" in IE5.5 to IE7? (1=yes, 0=no)

    //No need to edit beyond here////////////////////////

    dropmenuobj: null,
    asscmenuitem: null,
    domsupport: document.all || document.getElementById,
    standardbody: null,
    iframeshimadded: false,
    revealtimers: {},

    getposOffset:function(what, offsettype){
        var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
        var parentEl=what.offsetParent;
        while (parentEl!=null){
            totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
            parentEl=parentEl.offsetParent;
        }
        return totaloffset;
    },

    css:function(el, targetclass, action){
        var needle=new RegExp("(^|\\s+)"+targetclass+"($|\\s+)", "ig")
        if (action=="check")
            return needle.test(el.className)
        else if (action=="remove")
            el.className=el.className.replace(needle, "")
        else if (action=="add" && !needle.test(el.className))
            el.className+=" "+targetclass
    },

    showmenu:function(dropmenu, e){
        if (this.enablereveal[0]){
            if (!dropmenu._trueheight || dropmenu._trueheight<10)
                dropmenu._trueheight=dropmenu.offsetHeight
            clearTimeout(this.revealtimers[dropmenu.id])
            dropmenu.style.height=dropmenu._curheight=0
            dropmenu.style.overflow="hidden"
            dropmenu.style.visibility="visible"
            this.revealtimers[dropmenu.id]=setInterval(function(){
                cssdropdown.revealmenu(dropmenu)
                }, 10)
        }
        else{
            dropmenu.style.visibility="visible"
        }
        this.css(this.asscmenuitem, "selected", "add")
    },

    revealmenu:function(dropmenu, dir){
        var curH=dropmenu._curheight, maxH=dropmenu._trueheight, steps=this.enablereveal[1]
        if (curH<maxH){
            var newH=Math.min(curH, maxH)
            dropmenu.style.height=newH+"px"
            dropmenu._curheight= newH + Math.round((maxH-newH)/steps) + 1
        }
        else{ //if done revealing menu
            dropmenu.style.height="auto"
            dropmenu.style.overflow="hidden"
            clearInterval(this.revealtimers[dropmenu.id])
        }
    },

    clearbrowseredge:function(obj, whichedge){
        var edgeoffset=0
        if (whichedge=="rightedge"){
            var windowedge=document.all && !window.opera? this.standardbody.scrollLeft+this.standardbody.clientWidth-15 : window.pageXOffset+window.innerWidth-15
            var dropmenuW=this.dropmenuobj.offsetWidth
            if (windowedge-this.dropmenuobj.x < dropmenuW)  //move menu to the left?
                edgeoffset=dropmenuW-obj.offsetWidth
        }
        else{
            var topedge=document.all && !window.opera? this.standardbody.scrollTop : window.pageYOffset
            var windowedge=document.all && !window.opera? this.standardbody.scrollTop+this.standardbody.clientHeight-15 : window.pageYOffset+window.innerHeight-18
            var dropmenuH=this.dropmenuobj._trueheight
            if (windowedge-this.dropmenuobj.y < dropmenuH){ //move up?
                edgeoffset=dropmenuH+obj.offsetHeight
                if ((this.dropmenuobj.y-topedge)<dropmenuH) //up no good either?
                    edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge
            }
        }
        return edgeoffset
    },

    dropit:function(obj, e, dropmenuID){
        if (this.dropmenuobj!=null) //hide previous menu
            this.hidemenu() //hide menu
        this.clearhidemenu()
        this.dropmenuobj=document.getElementById(dropmenuID) //reference drop down menu
        this.asscmenuitem=obj //reference associated menu item
        this.showmenu(this.dropmenuobj, e)
        this.dropmenuobj.x=this.getposOffset(obj, "left")
        this.dropmenuobj.y=this.getposOffset(obj, "top")
        this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj, "rightedge")+"px"
        this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+1+"px"
        this.positionshim() //call iframe shim function
    },

    positionshim:function(){ //display iframe shim function
        if (this.iframeshimadded){
            if (this.dropmenuobj.style.visibility=="visible"){
                this.shimobject.style.width=this.dropmenuobj.offsetWidth+"px"
                this.shimobject.style.height=this.dropmenuobj._trueheight+"px"
                this.shimobject.style.left=parseInt(this.dropmenuobj.style.left)+"px"
                this.shimobject.style.top=parseInt(this.dropmenuobj.style.top)+"px"
                this.shimobject.style.display="block"
            }
        }
    },

    hideshim:function(){
        if (this.iframeshimadded)
            this.shimobject.style.display='none'
    },

    isContained:function(m, e){
        var e=window.event || e
        var c=e.relatedTarget || ((e.type=="mouseover")? e.fromElement : e.toElement)
        while (c && c!=m)try {
            c=c.parentNode
            } catch(e){
            c=m
            }
        if (c==m)
            return true
        else
            return false
    },

    dynamichide:function(m, e){
        if (!this.isContained(m, e)){
            this.delayhidemenu()
        }
    },

    delayhidemenu:function(){
        this.delayhide=setTimeout("cssdropdown.hidemenu()", this.disappeardelay) //hide menu
    },

    hidemenu:function(){
        this.css(this.asscmenuitem, "selected", "remove")
        this.dropmenuobj.style.visibility='hidden'
        this.dropmenuobj.style.left=this.dropmenuobj.style.top="-1000px"
        this.hideshim()
    },

    clearhidemenu:function(){
        if (this.delayhide!="undefined")
            clearTimeout(this.delayhide)
    },

    addEvent:function(target, functionref, tasktype){
        if (target.addEventListener)
            target.addEventListener(tasktype, functionref, false);
        else if (target.attachEvent)
            target.attachEvent('on'+tasktype, function(){
                return functionref.call(target, window.event)
                });
    },

    startchrome:function(){
        if (!this.domsupport)
            return
        this.standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body
        for (var ids=0; ids<arguments.length; ids++){
            var menuitems=document.getElementById(arguments[ids]).getElementsByTagName("a")
            for (var i=0; i<menuitems.length; i++){
                if (menuitems[i].getAttribute("rel")){
                    var relvalue=menuitems[i].getAttribute("rel")
                    var asscdropdownmenu=document.getElementById(relvalue)
                    this.addEvent(asscdropdownmenu, function(){
                        cssdropdown.clearhidemenu()
                        }, "mouseover")
                    this.addEvent(asscdropdownmenu, function(e){
                        cssdropdown.dynamichide(this, e)
                        }, "mouseout")
                    this.addEvent(asscdropdownmenu, function(){
                        cssdropdown.delayhidemenu()
                        }, "click")
                    try{
                        menuitems[i].innerHTML=menuitems[i].innerHTML+" "+this.dropdownindicator
                    }catch(e){}
                    this.addEvent(menuitems[i], function(e){ //show drop down menu when main menu items are mouse over-ed
                        if (!cssdropdown.isContained(this, e)){
                            var evtobj=window.event || e
                            cssdropdown.dropit(this, evtobj, this.getAttribute("rel"))
                        }
                    }, "mouseover")
                    this.addEvent(menuitems[i], function(e){
                        cssdropdown.dynamichide(this, e)
                        }, "mouseout") //hide drop down menu when main menu items are mouse out
                    this.addEvent(menuitems[i], function(){
                        cssdropdown.delayhidemenu()
                        }, "click") //hide drop down menu when main menu items are clicked on
                }
            } //end inner for
        } //end outer for
        if (this.enableiframeshim && document.all && !window.XDomainRequest && !this.iframeshimadded){ //enable iframe shim in IE5.5 thru IE7?
            document.write('<IFRAME id="iframeshim" src="about:blank" frameBorder="0" scrolling="no" style="left:0; top:0; position:absolute; display:none;z-index:90; background: transparent;"></IFRAME>')
            this.shimobject=document.getElementById("iframeshim") //reference iframe object
            this.shimobject.style.filter='progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)'
            this.iframeshimadded=true
        }
    } //end startchrome

}